Pa. man hospitalized after high-speed chase, then escapes from facility: police Updated May 11, 2021; A Pittsburgh-area man who was taken to the hospital after a high-speed chase with the police has now escaped from the hospital, investigators say. Mark Clements III, of McKees Rocks, is wanted after authorities say he escaped from the UPMC Mercy Hospital in Pittsburgh, where he was taken following the pursuit Saturday, WTAE is reporting. The chase started when Penn Hills police officers saw a vehicle being driven with a garbage bag over a side window, and when police ran the registration, they found the vehicle was linked to the shooting of an 11-year-old child in Pittsburgh Friday, WPXI reports.